圆x2+y2-2x-1=0关于直线2x-y+3=0对称的圆的方程是( )
A.(x+3)2+(y-2)2= | B.(x+3)2+(y+2)2= |
C.(x+3)2+(y-2)2="2" | D.(x+3)2+(y+2)2=2 |
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圆x2+y2-2x-1=0关于直线2x-y+3=0对称的圆的方程是( )
A.(x+3)2+(y-2)2= | B.(x+3)2+(y+2)2= |
C.(x+3)2+(y-2)2="2" | D.(x+3)2+(y+2)2=2 |